What Grease for Poly Bushings?
Race Director
Joined: Aug 2000
Posts: 11,470
Likes: 765
I have several old jars of dow-corning #11 silicone grease. it's been discontinued, but fairly sure it's been replaced with #111. I've been using #11 since the 70's on just about everything needing a silicone lubricant. I greased the hell out of my poly bushings, wiping the excess. to date, no issues, no squeaking. 
Melting Slicks
Joined: Mar 2012
Posts: 2,800
Likes: 456
From: USA
I just finished my 84 two weeks ago and used almost the whole little tub. I also used latex gloves to handle the grease. It was very hard to get off of any thing it touched.
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Drifting
Joined: Aug 2009
Posts: 1,978
Likes: 244
Grease the insides bore of the bushings where the steel sleeves fit. Be generous and wipe the excess off the surface after pressing the sleeves in. Those who have recommended gloves are on point. The grease is very tacky.
I've rebuilt my entire suspension, rear about 4 years ago and front 1.5 years. I used the energy suspension black kit, whit has graphiteninpregnated bushings. No squeaks heard to date.
I've rebuilt my entire suspension, rear about 4 years ago and front 1.5 years. I used the energy suspension black kit, whit has graphiteninpregnated bushings. No squeaks heard to date.
Team Owner
Joined: Oct 2004
Posts: 81,241
Likes: 3,063
From: altered state
St. Jude Donor '05
Went the polygraphite ones also, no squeaks at all.
The original poly bushings squeaked bad not sure about todays, some did some didnt. Used some blue Kendall bearing grease to be safe.
They sure do ride nice, car feels more positive..nothing like the feel of a fresh suspension rebuild.
The original poly bushings squeaked bad not sure about todays, some did some didnt. Used some blue Kendall bearing grease to be safe.
They sure do ride nice, car feels more positive..nothing like the feel of a fresh suspension rebuild.
Drifting
Joined: Jun 2020
Posts: 1,716
Likes: 744
From: Stay dangerous my friends
Standard poly bushings are not really suitable for rotating bearing suspension points, they are grabby, cold flow and deform in a short time period, are influenced by temperature, and shed any lubricant in a short amount of time, and tear if installed very tight. The OEM rubber bushings that work in shear instead of rotation are much superior, Delrin bushings are even better for rotation in a single axis (upper and lower control arms in an SLA) and high quality rod-end style bushings if there's three dimensional movement/rotation (rear lateral links for an IRS or 3/4 link solid axle). The places where they may be acceptable would be the rear diff mount, leaf spring mounts, perhaps the large sway bar mounts but that's iffy. Copper anti seize seems to last longer in these areas, less dirt attracted, doesn't degrade Poly like petroleum lubricants mentioned, isn't a grit magnet like the silicone greases.